With the opening up of China's market, foreign companies have flocked to the market. Many products that cannot be sold in their own countries have been pushed to the mainland market. The high price is staggering. On the sound quality, mediocre, often not as good as many domestic excellent equipment, but sales are hot. This has a lot to do with the unrealistic publicity of overseas media. Individual articles are also introduced in a cloudless manner and serve as the role of "foreign devils." As a result, many enthusiasts have reportedly used a large number of foreign machines that are extremely backward in technology and have a mediocre sound quality as a technologically advanced product. For the Chinese people, they are happy to move home without knowing themselves. How can the Chinese people "bitter" too!
The reason for this is that the one-sided propaganda that is too commercialized has played a misleading role. The internal cause is that most feverish brothers lack the ability to discern the ability to differentiate the quality of audio products. What is even more frightening is that some of our domestic manufacturers have followed suit, engaged in advertising campaigns with low level of repetition and massive investment, and have not used the materials of options to improve the sound quality, and have worked hard with advanced circuit structures.
The author used to be a welding school who had forgotten food seventeen years ago. Now, at the time of reflection, the ridiculous "Hu School" received a Hong Kong version of the audio magazine ten years ago as a treasure. All the metaphysics of his article is accepted. Been fooled by some articles for several years. When they were familiar with the subjective evaluation criteria of subjective listening, “The 10 Essential Standards” (also written by Hong Kong people), they heard the sound of real high-fidelity equipment and were seated in accordance with the standard—a pair of numbers—and then compared with the live performance of the band. If dreams wake up!
In order to let the fever beginner friend detours, avoid misunderstandings. As soon as possible to master the scientific methods of evaluation of audio equipment quality standards. Use science instead of metaphysics, and use scientific methods to analyze and evaluate the problems and sound quality of audio equipment. Use the scientific method you have learned and the “gold ear” you have tested to identify the sound quality level of the audio equipment. If this article can play the effect that the primary fancier can distinguish between pseudo fever and science fever, I would be very pleased. Nor is it a detour.
Misunderstanding about the quality of speaker cables
Most fever brothers were misled by commercial advertising. They believe that the more the number of shares of the speaker cable is, the better the sound quality is. What is more, some people look for 502 shares of the speaker cable everywhere, but they ignore the top speaker cable with few shares. . Another part of the people, one-sided superstition made of high-purity material speaker cable, 4N, 5N is not enough, to find 7N speaker cable everywhere. There is also a superstitious foreign brand. Today, with the Furukawa Line, they will find an ascent line tomorrow. The day after tomorrow, they brought in the overtime line, but in exchange for it, his sound system is still not sounding. The speaker money should be analyzed scientifically, grasp its technical essence, and understand the characteristics and problems of your equipment.
The more horn line stocks, the better the sound quality? no! Do not you see, most of the top manufacturers of wire rod cable manufacturers, almost all use single or only 3-7 shares thick line, rather than 502 thin line. Multi-stranded lines (over 100 shares) are mostly low-grade speaker cables. Is the higher purity of the speaker cable the better? no! Do not you see, super elbow empty top line for the harmonious alloy material. Alloy material enough for 7N? Not enough, even 4N is not enough, but its sound quality is much better than some high-purity materials. For another example, AQ's Crystal Series speaker cable is famous all over the world and is also made of different materials. Looking at the people at home on the Furukawa line, the sound quality of the entire system performed well. He also used the Furukawa line to improve the sound quality. After the change of money, the sound quality would definitely improve? Not necessarily! Because most of your equipment is not exactly the same as people's equipment, so your device sound quality characteristics and other people's not the same. To know that any equipment and wire have more or less personality, some equipment or wire has a very strong personality, if the match is not appropriate, personality conflicts, but will self-defeating, the entire system's voice will be very ugly. Most people think that the softer the core money is, the better the sound quality is. If you have actually seen the top line of the U.S. line, the original line is hard and thick, and its sound is softer than those of the core. The wire is much better! Seeing that readers here will become more and more confused, how the ingrained ideas in the original mind were overturned overnight. Does the author say that it is a “new heaven” with a commercial taste? Let us analyze the essence of wire technology in a realistic way.
First, the sound of each single material has its own personality. The more pure the personality of the material is, the more obvious it is. You can make a series of simple experiments to confirm the correctness of this point of view. If you can easily find a few copper wires, aluminum wires and iron wires instead of your existing speaker wires, you can easily hear the difference in their sound performance. This is the first correct rational knowledge that the author and readers get. Different materials used bring different personality sound performance.
Second, each single material of the wire, the more fine core, the more the number of shares, bass drill hypertrophy turbidity, the resolution and control of the power of the poorer! This can also be verified by a series of small experiments. Another conclusion can be drawn from the reverse thinking. Under the condition of the same conductor cross-sectional area, the resolving power and control force of the single thick line are better than those of multiple thin lines. This is the second thing we can get through simple experiments.
Third, the mixed use of different materials in the wire will adjust the tone to a certain extent, improve the sound quality, readers can properly mix different materials in accordance with the different ratio of wire to audition, will get one or several combinations of better results, and Each has different sound characteristics. Of course, it is best to use a single thick line for the combination, this change in sound will be very obvious. If combined to just right. Its sound is much better than any single component wire. This is not difficult to understand why the best wire is made of an alloy of different materials. Of course, alloy materials will cause different changes in the lattice of the material, which can only be achieved by high-tech means. And it can change the conductive properties of composite alloy materials. Don't you see that superconducting materials are all composites or alloys with multiple single-component materials? This is the correct understanding of the third key wire we have obtained through experimental verification.
Fourth, even a little bit of harmful components can degrade sound quality. In the pure copper surface stock, a thin layer of high copper content and solder, its sound quality immediately deteriorated, especially high-pitched distortion is obvious and easy to hear. From another point of view, the development of a pure material city village is to Reducing the amount of residual components that are harmful to sound quality, and dividing them from the net, has the advantage that there is also a disadvantage. The high-purity wire material made by this method has a more pronounced sound personality and is not conducive to the continuous improvement of sound quality.
Fifth, the arrangement of wire rods affects the sound quality. If each line is arranged according to Figure H, (cross-sectional structure can be simply seen, A money and its adjacent lines have line capacitance, and the other five lines are close to the distance, so that The capacitance between the lines is larger, and the increase in line capacitance will undoubtedly make the attenuation of high-frequency signals more noticeable, and even worse, it will seriously affect the transparency of the treble and the balance of the entire range of sounds, causing the bass to feel overly fat. The St. Crystal Series speaker cable adopts the pattern of row L as shown in Figure L. Obviously, it can be seen that there are only two lines adjacent to each core. In fact, only the A and B strands of the line capacitance are obvious. Compared with the arrangement pattern of H in the figure, the line capacitance is only a fraction of H, and other distribution parameters are also greatly improved.There is no doubt that the L arrangement will have a more transparent high tone performance than the H arrangement.
Sixth, using high-tech means to change the physical structure of the material to improve the sound quality of the wire. The semiconductor material that we are familiar with is single-crystal silicon, which is obtained by mono-crystallization of silicon. Common silicon materials cannot be used for manufacturing transistors, and single-crystal silicon is widely used in the manufacture of transistors and integrated circuits. It can be seen that the electrical conductivity of single crystal silicon and ordinary silicon materials is obviously different. Some modern high-end speaker cables have used single crystal copper material to improve the sound quality of the wire. The wires made of these materials are marked with directions, and the sound quality in the forward direction is improved, and the reverse use of sounds can be difficult to hear. This is due to the fact that single-crystal materials do not have the same conductivity in different directions. There are also differences between this and semiconductor materials. At present, part of the book sale wire is marked with directions, but many of them are not single-crystal copper materials but are counterfeit. The method of discrimination is to change the direction to audition. The person with the greater difference in the direction of the sound is the genuine product, and the person without the change is the fake product.
It is concluded that: The line material technology is not metaphysical science, good wire rod manufacturing technology is difficult for ordinary people to imagine: such as the United States City Holy (AQ), the top line of overtime, almost exhausted a variety of technical means, sound quality Of course, it is refined. The quality of the sound quality of wire rods, the quality of the pros and cons is achieved by * scientific and technological means, but by no means only the number of shares, soft and hard can be determined. The purpose of this article is to explain the simple principles of wire technology in a simple way and try to make it easy to understand. Therefore, it is easy to evacuate profound and difficult professional knowledge such as physical chemistry and metal processing technology. Look at professional workers in this area. Forgive me.
Misunderstanding of fiber optic cable
Many years ago, the author saw a fever audio magazine in Hong Kong evaluating the optical fiber line as "hard" and "gone" in the evaluation of the digital cable, and was unanimously endorsed. Recently, people in China have seen this bizarre, and believe that only senior fans have come to such conclusions (because most people who play fiber optic cables have independent DAC decoders, and decoders in China are rarer, but Whether senior or not can not be set with or without decoder.) In fact, this view has been completely wrong. The "hard" and "gone" of the "optical fiber lines" they heard were only due to the sound equipment they possessed, especially the low quality of the turntable, and the loss of a large amount of information. Hard. "The equipment phase distortion is too great, the sound image is unstable, the sound is 'gone up'. It does not matter what the fiber line.
Theoretically speaking, any coaxial digital cable cannot achieve extremely low-loss, high-capacity, extremely high bandwidth, and few electromagnetic interferences. In contrast, coaxial lines are all disadvantages. If the coaxial line is as good as some magazines, why not use coaxial fiber instead of coaxial cable for long distance information transmission? Moreover, there is a reflection impedance on the coaxial line, and the phase distortion cannot be ignored. The optical fiber does not have these weaknesses at all. No matter from theory to reality, optical fiber is the best digital line. It is not surprising that some foreign audio magazines have this quirk. One is limited by the conditions of its equipment and the technical level and experience of its contributors. Two fiber optic cables are cheaper and the coaxial line is more expensive. What kind of line sales profits are self-evident? It is also highly recommended for coaxial lines for commercial interests.
I use the turntable for the Philips CDM12.0/12.1/12.4/12.6 and professional turntable CDM36, Pioneer CLD-303LD machine turntable, coaxial and digital fiber money for sound quality comparison, join Coles HDCDDAC decoder, get the following results.
l. Philips CDM12.0/12.1 turntable, optical fiber cable can hear the feeling of 'hard' and 'gone floating'. CDM12.4 has improved (improved), while CDM12.6 has only a slight sense of sound and hard feeling. .
2. Pioneer LI's rotary sound is heavy, and the sound is hard and floating is very obvious.
3. The Philips CDM36 turntable has absolutely no "hard" or "gone" phenomenon. The performance of the optical fiber cable is repeatedly and quickly switched at the input end of the decoder compared to the coaxial cable (price up to 0/m). Can't hear the difference. If there is a slight difference, only the optical fiber will perform better and the sound will be cleaner and thicker. Don't forget that the optical fiber used is just 100 yuan/bargain.
From the above experiments, it can be seen that the optical fiber line is the most neutral, the least loss, the highest resolution of the digital line, or how can you hear the "hard" and "gone" of the sound caused by the loss of information on the low-grade dial and the coaxial line can not hear This difference comes. This shows that the coaxial cable is poorer in resolution than the fiber optic cable and cannot distinguish this slight difference. The resolution of the fiber optic cable is so high that “they don’t rub the sand”! This also tells us that if your equipment is not high enough, especially if the quality of the gold is low, please do not choose the fiber optic cable. If we spend thousands of dollars to buy a coaxial cable, we might as well use this money to purchase Philips CDM36 turntables, and only use inexpensive fiber optic cables as digital cables, so the quality of your equipment will be greatly improved. You can try it out.
The technical indicators of fiber-optic line transmission signals are extremely high and are far from being comparable to the coaxial line. However, overseas magazines have actually moved out of the “wrong technical indicators, sound quality is good” and other misguided views misled my generation for many years, and this view even they can not justify themselves. The reader is reminded that the information is commercial, whether it is at home or abroad, especially for sound publications that are strongly influenced by the business. Do not want people to be in a cloud, use your own insights, analyze and evaluate scientifically correct articles you read, and then you will be able to preserve the truth!
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